- A penis sleeve typically only covers the shaft of the penis
- A penis sheath tends to cover the whole penis
- A penis extender also covers the whole penis but also provides additional length or width for deeper penetration
Penis sleeves were initially developed as medical devices but many are now sold as sex toys. A 2017 study found that penis sleeves were a useful, low-risk option for people who struggle with erectile dysfunction.
A penis sleeve should not be confused with a masturbation sleeve, which isn't worn during penetrative intercourse, but is held during masturbation to provide greater sensation during stroking.
